To diamond power



June 22 1926.

S. J. HERMAN BOI LER CLEANER Filed Dec. 9 1918 3 Sheets-Sheet 2 June 22 1926.

S, J. HERMAN BOILER CLEANER Filed Dec. 9. 1918 3 Sheets-Sheet an ueutoz @M wm-mmfmvm@ Patented June 22, 1926.

raven-*lr OFFICE@ J. Hannan, or DETROIT, MICHIGAN, ASSTGNOR, BY russianY Assrenmnnrs, To DIAMOND rOWnnsrEorALTY cORroRATrON;` on DETROIT, MTCHIGAN, A conr ."EORATION OF MICHIGAN.

BOILER (LJEANIEIR'.A

Application filed December 9, 1918. Serial No; 265,847.

This i-nvention relates to boiler cleaners, and refers more particularly to a cleaner of the blower type and? adapted for locomotive or other boilers ofvsimilar nature.

the objects of the invention are to provide a cleaner employing the same blower unitsvto tions of the flues and super-heater pipes so as to exertainaximum cleaning effect upon the relatively heavy soot, clinler, cindcr,

or otheraccumulations on said portions; to provide for` discharge of the steam both forwardly and rearwardly fron'r said nozzles; to arrange thev control of the various valves f from the cab ofthe locomotive; andin `general?, to'provide a new and improvedboiler cleaner of theI character above referred to.

In the" drawings: Figure l is a viewof a'locomotive partly in side elevation and partly in section-,showingthe installation of blowerunits in the boiler lines;

Figure 2' is across" sectional View taken on lineQ---` of Figure l, showing a system of branch supply pipes for various cleaner units;

Figure B'isa view 'showing a portion of Figure l upon enlarged scale;

Figure 4 is a detailed' side elevational f'" view of one' of the blower nozzles.

ln` these views,' thereference character' l designates the cab of a locomotive, and 2 the shell thereof. Theboiler 3 is provided with a series of parallel flues l in each of whch there is located a plurality of superheating pipes 5 return-bent at their rear ends :as is best shown in Figure 3. Centrally within each flue ff, adjacent the rear ends of the superheater pipes, there is located a nozzle 6 having jet openings 7 for discharging steam both forwardly and rearwardly of the tubes. Said nozzles are Offset slightly above the pipes 8 supplying steam thereto so as to minimize the obstruction offered to the jets by said supply pipes. The pipes 8 extend through the flues l to the front end of the boiler, where they are connected by short vertical extensions 9 to headers l0 extending across the end of the boiler between the rows Among lines, each of they headershaving said pipes 9 extending both upwardly and downward-ly therefrom. The headers l0I are sup*- plied with steam from al vertical portion ll ofa. main steam supply pipe l2 which ifs en# tended rearwardly and then vertically, and connects withl the dome I3 or some othersuitable portion of the boiler to receive' itsY steam supply. The flow through the pipe 'l2 is controlled by a valve 14: through an elongated handle 15 accessible from the engine cabi It is preferred to* duplicate the construction above described'so as to permitthe flues and su-perheater tubes atl one side'y ofth-e center' line of the boiler to be separatelyV cleanedfrom those at the other side', wlrereby undue interference with the draft during a cleaning operation is avoided. The referf ence characters applied to one of the sets of duplicate parts are primed-f to distinguish said parts from the* others.`

Each of the supply pipes l2 is provided preferably at its forward' end witha drainage pipe 16 terminatingin' a ball check valve 17 normally opened but'automati'callyfclosedl lpy steam pressure during cleaning operaions.

The nozzles 6 and the steam supply pipes of a metal special-ly treated to withstand4` temperatures rangingy up to' between 1800O and 15000 Fahr. @wing -to the location of the nozzles within the flues and intermediate the extremities of the supereheater tubes with the jets discharging both forwardly and rearwardly, `a` very efficient "cleaning `ef fect is exercised. Since the deposits accumulate most rapidly upon the return-bent ends of the super-heater pipes and upon the corresponding portions of the flues, the abovedescribed location of the cleaner nozzles is such as to secure the most eiicient results in removing the deposits.

lt is to be noted that the described construction does not require the boiler to be shut down during the cleaning operation and that the steam jets are opposed to the draft only in a small portion of the entire length of the flues.

Vhat l claim as my invention is:

1. In a boiler structure, the combination with a plurality of flues extending longitudinally of a locomotive and steam superheating pipes respectively arranged in said flues, said superheating pipes having return bent portions located toward the draft inlets of the flues, of blower nozzles disposed within the respective flues and provided with jet openings discharging both forwardly and rearwardly for cleaning the flues and return-bent portions of said superheating pipes, a main steam supply pipe for said nozzles, and branch steam pipes extending through said flues to the nozzles.

2. In a boiler structure, the combination with a plurality of flues extending' longitudinally of a locomotive and steam superheating pipes respectively arranged in said fines, of means respectively disposed within said flues in an intermediate relation to the ends of the super-heater pipes for dischargA ing steam jets forwardly and rearwardly for cleaning said flues and the super-heating pipes.

3. In a boiler structure for locon'ietive boilers or the like, the combination with a plurality of flues extending longitudinally of a locomotive, and steam super-heating pipes respectively arranged in said fines, said super-heating pipes having return-bent portions located toward the draft inlet ends of the flues, of blower nozzles arranged adjacent the return bent portions to blow through the flues in adirection against the draft and toward the draft inlet ends of the lines .and in a manner tending to remove accumulations at the return-bent portions of the super-heater pipes.

4t. In a boiler, the combination with a Vfire tube system of a cleaner con'xprising an expanding jet nozzle inserted permanently within a tube and adapted under pressure to direct a jet of fluid at high velocity parallel with the axis of the tube and in the direction of the normal draft to induce an intensi-ed gaseous flow through the tube, and means for admitting and conducting such fluid to the nozzle.

5. The combination with a multiple fire tube boiler of cleaning means comprising` expanding jetnozzles inserted permanently within the fire tubes and each adapted under pressure to direct a jet ot' fluid at high velocity parallel with the axis of the tube and in the direction of the normal draft to induce an intensilied gaseous [iow through the tube, and means for admitting and conducting such fluid to the respective nozzles.

e. The combination with a lire tube boiler having two series or groups of tire tubes. of cleaning means for one such series or groups, comprising pipes permanently located within the tubes thereof having nozzles directing jets within the tubes parallel thereto, and in the direction of the normal draft, and a valved conduit conducting fluid under pressure to such pipes and nozzles whereby when fluid under pressure is admitted thereto the jets from the nozzles induce an intensified gaseous flow through the fire tubes of said group in the direction of the normal draft, accompanied by a rcverse flow o't gases through the tubes outside such group.

7. The combination with a tire tube boiler having two series or groups of tire tubes. of two series or groups, of cleaning meansl con'iprising pipes permanently located within said tubes having nozzles directing jets within the tubes parallel thereto, and in thc direction of the normal draft, whereby to induce an intensified flow of gases through the tubes, .and conduits conducting fluid under pressure to the respective groups of cleaning means, with valves for controllingr the flow thereof to either group separately, whereby when fluid is admitted to one group of cleaning means, the jets from the nozzles thereof induce a gaseous blast in corresponding direction through the fire tubes of such group, accompanied by a reverse flow ot' gases through the tubes of the other group, and when fluid is shutl off therefrom and admitted to the other group of cleaning means, the gaseous flow through the respective groups of re tubes is reversed.

In testimony whereof I atIiX my signature.

SAMUEL J. HERMAN. 

